FreeRTOS is a real-time operating system kernel for embedded devices that support various architectures such as Altera Nios II, ARM architecture, Fujitsu, Microchip Technology, STMicroelectronics etc.
Vulnerabilities affected multiple Versions of operating systems including, FreeRTOS up to V10.0.1 (with FreeRTOS+TCP), AWS FreeRTOS up to V1.3.1, WHIS OpenRTOS and SafeRTOS (With WHIS Connect middleware TCP/IP components).
FreeRTOS and SafeRTOS have been used in a wide variety of industries: IoT, Aerospace, Medical, Automotive, and more.
Researchers addressed 13 Vulnerabilities that includes 4 Critical remote code execution vulnerabilities, 1 Denial of service flaw, 7 Information leak flaw, and 1 other category.
|CVE-2018-16522||Remote code execution|
|CVE-2018-16525||Remote code execution|
|CVE-2018-16526||Remote code execution|
|CVE-2018-16528||Remote code execution|
|CVE-2018-16523||Denial of service|
Above vulnerabilities allows an attacker to crash the device, leak information from the device’s memory, and remotely execute code on it, thus completely compromising it.
FreeRTOS was developed by Real Time Engineers Ltd but In November 2017, Amazon Web Services (AWS) took stewardship for the FreeRTOS kernel and its components.
In this case “AWS FreeRTOS focused to provide a fully enabled IoT platform for microcontrollers, by bundling the FreeRTOS kernel together with the FreeRTOS TCP/IP stack, modules for secure connectivity, over the air updates, code signing, AWS cloud support, and more.”
zLabs researchers found these vulnerabilities within FreeRTOS’s TCP/IP stack and in the AWS secure connectivity modules. The same vulnerabilities are present in WHIS Connect TCP/IP component for OpenRTOSSafeRTOS.
Also zimperium team reported the vulnerabilities and collaborate with Amazon and release the patch for all the above vulnerabilities.